EP1665487A1 - Verfahren zur steuerung eines elektronischen berstromauslösers für niederspannungs-leistungsschalter - Google Patents

Verfahren zur steuerung eines elektronischen berstromauslösers für niederspannungs-leistungsschalter

Info

Publication number
EP1665487A1
EP1665487A1 EP04786191A EP04786191A EP1665487A1 EP 1665487 A1 EP1665487 A1 EP 1665487A1 EP 04786191 A EP04786191 A EP 04786191A EP 04786191 A EP04786191 A EP 04786191A EP 1665487 A1 EP1665487 A1 EP 1665487A1
Authority
EP
European Patent Office
Prior art keywords
signals
current
signal
voltage circuit
low
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04786191A
Other languages
German (de)
English (en)
French (fr)
Inventor
Ilka Redmann
Andreas Pancke
Andreas Krauss
Klaus Neidhardt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1665487A1 publication Critical patent/EP1665487A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
    • G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current

Definitions

  • the invention relates to a method for controlling an electronic overcurrent release for low-voltage circuit breakers with the features mentioned in the preamble of claim 1.
  • overcurrent releases are used to detect the event of an overcurrent event (e.g. short circuit) in good time and to prevent damage or destruction of the low-voltage circuit breaker by suitable means, e.g. means for immediate disconnection of the contacts.
  • overcurrent event e.g. short circuit
  • the current flowing through the low-voltage circuit breaker is determined. According to the state of the art, this can be achieved, for example, by air coils which are arranged near the current-carrying elements of the low-voltage circuit breaker.
  • the current-carrying conductor generates a magnetic field, the change in time of which in the coil leads to a voltage.
  • This voltage signal is regularly converted into a digital signal by means of an analog-digital converter, which is integrated and represents a variable for the current flowing through the low-voltage circuit breaker within a time interval.
  • This digitized current signal is fed to a microprocessor, which evaluates the individual, temporally successive current signals. If a disproportionate current rise (overcurrent event) is concluded from the digitized current signal, the microprocessor adjusts Signal available which activates a trigger for short-circuit protection.
  • Another disadvantage is that only those faults can be recognized which have a significant influence (three times the previous current value) on the current values. Smaller faults, which do not reach three times the previous current value, can also lead to false tripping of the overcurrent release if they occur several times.
  • a particular advantage of the method according to the invention for controlling an electronic overcurrent release for low-voltage circuit breakers is that it has a lower susceptibility to faults due to faults caused by power supplies or EMC influences. Characterized in that signals whose current value is not between the current values of the previous signal and the subsequent signal or whose current value does not match the current values of the previous one Signals or the subsequent signal matches classified as potentially faulty signals and can be checked by means of further criteria, it is also possible to identify and filter such faults which have a smaller influence on the digitized current values than three times the previous stir value.
  • those signals classified as potentially faulty are not included in the evaluation for the assessment of an overcurrent event, the current values of which exceed the current values of the preceding signal by a predetermined value.
  • the digitized current signals are preferably generated for the effective values of the current flowing through the low-voltage circuit breaker.
  • the evaluation and filtering of the digitized current signals according to the criteria mentioned above is preferably carried out by a data processing device.
  • the data processing device is a microprocessor.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Protection Circuit Devices (AREA)
EP04786191A 2003-09-12 2004-08-24 Verfahren zur steuerung eines elektronischen berstromauslösers für niederspannungs-leistungsschalter Withdrawn EP1665487A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10343350A DE10343350A1 (de) 2003-09-12 2003-09-12 Verfahren zur Steuerung eines elektronischen Überstromauslösers für Niederspannungs-Leistungsschalter
PCT/DE2004/001909 WO2005027292A1 (de) 2003-09-12 2004-08-24 Verfahren zur steuerung eines elektronischen überstromauslösers für niederspannungs-leistungsschalter

Publications (1)

Publication Number Publication Date
EP1665487A1 true EP1665487A1 (de) 2006-06-07

Family

ID=34305906

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04786191A Withdrawn EP1665487A1 (de) 2003-09-12 2004-08-24 Verfahren zur steuerung eines elektronischen berstromauslösers für niederspannungs-leistungsschalter

Country Status (5)

Country Link
US (1) US7724488B2 (zh)
EP (1) EP1665487A1 (zh)
CN (1) CN1849734A (zh)
DE (1) DE10343350A1 (zh)
WO (1) WO2005027292A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102044381B (zh) * 2009-10-16 2013-05-08 张世兴 精密脱扣器
US9488714B2 (en) 2013-03-15 2016-11-08 General Electric Company Methods and systems for continuous calibration of circuit breaker trip units and metering devices
DE102017127983A1 (de) 2017-11-27 2019-05-29 Beckhoff Automation Gmbh Sicherungsmodul und feldbussystem mit sicherungsmodul

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4347581A (en) * 1979-09-24 1982-08-31 Tokyo Shibaura Denki Kabushiki Kaisha Input setting method for digital operational devices
US4456867A (en) * 1983-04-20 1984-06-26 Westinghouse Electric Corp. Motor control apparatus with input validator
US4767996A (en) * 1986-01-20 1988-08-30 Kabushiki Kaisha Toshiba Fault current detection device for a D.C. network
ES2041892T3 (es) * 1988-06-13 1993-12-01 Siemens Aktiengesellschaft Procedimiento para la supresion de perturbaciones rn mediciones ultrasonicas de la distancia.
JPH02101921A (ja) * 1988-10-05 1990-04-13 Toshiba Corp 過負荷電流検出装置
JPH04364316A (ja) * 1991-06-11 1992-12-16 Toyota Autom Loom Works Ltd 過電流検出方式
JP2857529B2 (ja) * 1992-03-04 1999-02-17 三菱電機株式会社 回路遮断器
JPH077838A (ja) * 1993-06-16 1995-01-10 Toshiba Corp 回路遮断器の制御装置
JPH08214445A (ja) * 1995-02-07 1996-08-20 Toshiba Corp 回路遮断器
US6625550B1 (en) * 1998-02-19 2003-09-23 Square D Company Arc fault detection for aircraft
US6434715B1 (en) * 1999-06-14 2002-08-13 General Electric Company Method of detecting systemic fault conditions in an intelligent electronic device
US6545849B1 (en) * 1999-12-20 2003-04-08 General Electric Company Instantaneous fault detection circuit method and apparatus
US6671151B2 (en) * 2001-10-03 2003-12-30 Eaton Corporation Network protector relay and method of controlling a circuit breaker employing two trip characteristics
US6731487B2 (en) * 2002-03-20 2004-05-04 General Electric Company Method and devices for optimizing power consumption of trip units containing microprocessors

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005027292A1 *

Also Published As

Publication number Publication date
DE10343350A1 (de) 2005-04-21
WO2005027292A1 (de) 2005-03-24
US7724488B2 (en) 2010-05-25
CN1849734A (zh) 2006-10-18
US20070086139A1 (en) 2007-04-19

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RIN1 Information on inventor provided before grant (corrected)

Inventor name: PANCKE, ANDREAS

Inventor name: REDMANN, ILKA

Inventor name: KRAUSS, ANDREAS

Inventor name: NEIDHARDT, KLAUS

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